Finding the Fourth Proportional to 5,266.15, 7,887.58 and 3,851.89

Step by Step Solution

1. Step 1: Write the proportion equation
   5,266.15 : 7,887.58 = 3,851.89 : x
2. Step 2: Convert to fraction form
   5,266.15/7,887.58 = 3,851.89/x
3. Step 3: Cross multiply
   5,266.15x = 7,887.58 × 3,851.89
4. Step 4: Simplify right side
   5,266.15x = 30,382,061.18
5. Step 5: Solve for x
   x = 30,382,061.18/5,266.15
6. Step 6: Final answer
   x = 5,769.31